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There is an insect that we classify as pest. Why they protect is because a whole swarm of pest can clear a field of crops larger than a football field.

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Since crop pests are classified as anything which can do damage to a crop, including weeds, insects, bacteria, fungi, mites, birds, rodents, etc., farmers need to protect the crops so that they can still get to harvest them. With no protection against the pests, there is frequently no crop left to be harvested.

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12y ago

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